add params to search engine

metagpt/configs/search_config.py

@@ -7,6 +7,8 @@
 """
 from typing import Callable, Optional
 
+from pydantic import Field
+
 from metagpt.tools import SearchEngineType
 from metagpt.utils.yaml_model import YamlModel
 
@@ -18,4 +20,11 @@ class SearchConfig(YamlModel):
     api_key: str = ""
     cse_id: str = ""  # for google
     search_func: Optional[Callable] = None
-    params: dict = {}
+    params: dict = Field(
+        default_factory=lambda: {
+            "engine": "google",
+            "google_domain": "google.com",
+            "gl": "us",
+            "hl": "en",
+        }
+    )